// 张三 写的被调用端
function multipleN(ab) {
  // somefunction ();
  //   n = n || 9;
  for (let m = 1; m <= ab; m++) {
    let line = "";
    // let a = m;
    for (let i = 1; i <= m; i++) {
      // let b=i;
      let unit = m + "*" + i + "=" + m * i + " ";
      // console.log(unit);
      line = line + unit;
    }
    console.log(line);
  }
  // somefunction ();
//   console.log("=======" + key);
}

//  李四 调用端
let a = 5;
multipleN(a);

